Steam vacuum-pump



(No Model.)

G. H. NYE.

I STEAM'VAGUUM PUMP. No. 332,738. Patented Dec. 22, 1885.

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GEORGE NYE, OF CHICAGO, ILLINOIS.

STEAM VACUUM-PUMP.

SPECIFICATION forming part of Letters Patent No. 332,738, dated December22, 1885.

Application filed April 20, 1895.

To all whom, it may concern.-

Be it known that I, GEORGE H. NYE, a citizen of the United States, and aresident of Chicago, county of Cook, and State of Illinois, haveinvented new and useful Improvements in Steam Vacuum-Pumps, of which thefollowing is a specification, reference being bad to the accompanyingdrawings,illustrating the invention, in' which- Figure 1 is a brokenelevation of the lower portion of the pump and a sectional elevation ofthe valve,valve-case,and pipe-connection with the cylinders; Fig. 2, abroken elevation of the Valve-case and connecting-pipes with the valveremoved; Fig. 3, a perspective representation of the valve removed fromthe case; Fig. 4, a transverse section of the valve and case on line X,Fig. 2.

The present invention relates to an improvement in that class of pumpsby which water is elevated by the production of vacuums in the cylindersby means of steam.

The difficulties heretofore encountered with this kind of pump has beenin the tardy movement of water into and out of the cylinders, inconsequence of the time required for produc ing a vacuum, resulting inan intermittent flow of water and uncertainty of action. I have overcomethese objections by a val ve-and-pipe connection between the cylindersof novel construction, wherefore I do not have to wait for all the waterto be driven from a cylinder before the valve will shift, for the reasonthat the discharge-pipe is above the bottom of the cylinder, so thatsteam comes under the water in the pipe, and then suddenly commingleswith it and relieves the cylinder of so much pressure and the end of thevalve over it that the more active steam at the other end of the valvewill make the shift.

Heretofore the construction has been such that the steam so impinged onthe water being discharged that a largely decreased vacuum was theresult.

B D represent the two vacuum-cylinders, of ordinary construction, and 'Wis the base connectingtheir bottom ends; and F is the discharge-pipe,which is made large enough at the place of connection withthe base WV to pro vide room for the two exit-valves I over the innerends of the pipes H H,which connect the cylinders with thedischarge-pipe F.

Serial K011515359. (No model.)

G is the supply-pipe, which communicates with the cylinders 13 D bymeans of pipes H H, which have valves 6 placed over their ends, whichenter the cylinders.

This construction, including the condenser F, so far is substantiallythe same as the pump patented to me on December 15, 1874., No. 157,863,except there is a change in the pipes H H and valves I I.

I have retained this former construction of mine to show that my presentimprovement can be applied to most of the vacuunrpumps now in use, thecondenser F not being a neces sary part of this structure; but itsremoval is not required. In the construction of new pumps this condenserwill be omitted.

S R represent two pipes which respectively connect the cylinders B Dwith the valve-case A L K. This case,with its valve, has a novelconstruction, as followsz'The four-part valve is shown at J J L L E, thecore between the four parts being shown at a a a. The seat for the valveis longer than the valve, as shown at Fig. 1, that the valve my have alongitudinal movement; and formed in the lower part of the case are twoopenings, 1 and 4,which communicate with the valve-chamber and pipes RS, and formed annularly around the valve-seat and inside of the case arethree grooves, (Z M d, the grooves d d communicating with thevalvechamber, and respectively with the pipes R S; but the groove anonly communicates with the interior of the valve and with the steam-pipeO. A partition, N, placed below the groove m, prevents any communicationof the pipes R S, except by way of the valve.

That part of the valve-case shown at A,with the pipes R S, by means ofsuitable cores, is cast in one piece; but the heads L K are castseparate, with lugs z 2, that they may be, by

suitable bolts put in them, secured to the ized in the action of steam,and the steam does not condense so quickly, because there is a greaterbody at the ends of the valve. The valve, however, will shift by theaction of steam from the holes 0 against a solid head; but I do not findsuch action quite so prompt. The openings 1 4 are to admit steam to thechambers e e at the ends of the valve-case, the annular grooves d d tothe spaces between the parts J L, and the groove m to the space betweenthe parts L L.

Th'e'm-aterial is mostly cast-iron, but the cylinders B D may be made ofboiler-iron, with cast heads and flanges.

The water is alternately taken into the cylinders by means of the pipesG H H, and is discharged through pipes H F, and the action of the valveand steam is as follows: By means of a suitable connection steam from aboiler is taken in at the pipeG, and taking the valve to be in theposition shown at Fig. 1that is, the valve butts against the head K ofthe valvecase-the steam passes into the space a between the ports L,thence through the lefthand port L, and into the space a to the left ofit, and from thence onto the top of the water in cylinder B, and intothe chamber 6 in the head L, and between the end of the valve'and handend of the valve, while the steam in the chamber 6 in the head K is themore active and lifts the valve to the left and puts steam into thecylinder D, in which the steam operates in the same manner as incylinder B. The pump will continue to work automatically so long assteam and water are applied.

I claim and desire to secure by Letters Patent of the United States Insteam vacuum-pumps for elevating water, the valve case A L K,constructed with the pipe attachment R S, openings 1 4 communicatingwith the valve-chamber and pipes R S, the annular grooves d d m,steam-pipe C, and partition N, in combination with the valve having thefour cut-offs J L L J, spaces a aa between them, and holes 0 through theheads J J for alternately directing steam into the cylinders B D, asspecified.

GEORGE H. NYE.

Witnesses:

ARTHUR G. MoREY, G. L. CHAPIN.

